Designation:D6728−11StandardTestMethodforDeterminationofContaminantsinGasTurbineandDieselEngineFuelbyRotatingDiscElectrodeAtomicEmissionSpectrometry1ThisstandardisissuedunderthefixeddesignationD6728;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversthedeterminationofcontami-nantsandmaterialsasaresultofcorrosioningasturbineordieselenginefuelsbyrotatingdiscelectrodeatomicemissionspectroscopy(RDE-AES).1.1.1ThetestmethodisapplicabletoASTMGrades0-GT,1-GT,2-GT,3-GT,and4-GTgasturbinefuelsandGradesLowSulfurNo.1-D,LowSulfurNo.2-D,No.1-D,No.2-D,andNo.4-Ddieselfueloils.1.1.2Thistestmethodprovidesarapidat-sitedeterminationofcontaminationandcorrosiveelementsrangingfromfrac-tionsofmg/kgtohundredsofmg/kgingasturbineanddieselenginefuelssothefuelqualityandlevelofrequiredtreatmentcanbedetermined.1.1.3Thistestmethodusesoil-solublemetalsforcalibra-tionanddoesnotpurporttoquantitativelydetermineordetectinsolubleparticles.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.Thepreferredunitsaremg/kg(ppmbymass).1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D975SpecificationforDieselFuelOilsD2880SpecificationforGasTurbineFuelOilsD4057PracticeforManualSamplingofPetroleumandPetroleumProductsD5854PracticeforMixingandHandlingofLiquidSamplesofPetroleumandPetroleumProductsD6299PracticeforApplyingStatisticalQualityAssuranceandControlChartingTechniquestoEvaluateAnalyticalMeasurementSystemPerformance3.Terminology3.1Definitions:3.1.1burn,vt—inemissionspectroscopy,tovaporizeandexcit...
